All MIBs › CASCADE-MIB › pportXmitClock
pportXmitClock
Module: CASCADE-MIB
OID (symbolic): CASCADE-MIB::pportXmitClock
OID (numeric): 1.3.6.1.4.1.277.1.4.2.1.8
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: The transmit clock source. This object works in cooperation with pportXmitClock.
The following are the various values for different clock source types:
Type Clock Source pportRevClock pportXmitClock { pportEntry 7 } { pportEntry 8 }
V.35 DCE ............ 0 0 or UIO LoopTime DCE ... 3 0 DTE ............ 1 2 Direct Trunk ... 1 0
T1 or Loop Timed ..... 1 1 E1 Internal ....... 2 2 External ....... don't care 3
What is pportXmitClock?
This reports the transmit clock source in use on this physical port, again governed by the same clock-source table shared with pportRecvClock for V.35/UIO and T1 port types. Because ATM and frame relay links need both ends to agree on who provides timing, this value tells you whether this port is sourcing its own transmit clock or slaving to the far end, which is the first thing to check when a serial link will not synchronize. If both this pport and its remote peer are configured to transmit using internal (DCE) clocking, the mismatch would need one side switched to loop-timed to establish a stable link.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.277.1.4.2.1.8 snmpwalk -v2c -c public <target> CASCADE-MIB::pportXmitClock
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.277.1.4.2.1.8.1 snmpget -v2c -c public <target> CASCADE-MIB::pportXmitClock.1
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OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.277 | cascade | CASCADE-MIB |
| 1.3.6.1.4.1.277.1 | cascfr | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4 | pport | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2 | pportTable | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2.1 | pportEntry | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2.1.8 | pportXmitClock | CASCADE-MIB |